Efficient Demodulation Algorithms for MIMO-LoRa

Jae Mo Kang, Kae Won Choi

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Multiple-input-multiple-output (MIMO) and long range (LoRa) have been synergistically combined to better support a variety of Internet of Things (IoT) applications. This letter investigates the problem of demodulation for a MIMO-LoRa system. The existing demodulation strategy for MIMO-LoRa is based on the maximum-likelihood criterion, which, however, suffers from its high computational complexity. To cope with this issue, in this letter, we develop efficient coherent and noncoherent demodulation algorithms for the MIMO-LoRa system by leveraging useful properties of modulated chirps through multiple antennas. We also analyze the computational complexities of the proposed algorithms and demonstrate their validity through numerical simulations.

Original languageEnglish
Pages (from-to)21129-21130
Number of pages2
JournalIEEE Internet of Things Journal
Volume10
Issue number23
DOIs
StatePublished - 1 Dec 2023

Keywords

  • Demodulation
  • Internet of Things (IoT)
  • long range (LoRa)
  • multiple-input-multiple-output (MIMO)

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